June 01, 1907

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Features

Speed Indicators on Locomotives

Single-Service Paper Milk Bottles

Running Municipal Trolley Cars with Garbage and Refuse

Slaughter in War and Peace

Domestic Electric Light Plant Driven by a Windmill

The Brennan Gyroscope Monorail

To the Jamestown Exposition by Motor Boat

By George Ethelbert Walsh

Our 735,000,000-Bushel Wheat Crop

Some Unknown American Natural Bridges

By T. S. Parsons

A Home-Made Barometer

By S. Leonard Bastin

The Wonderful Sulphur Mines of Louisiana

Departments

Departments

The Heavens in June

Correspondence

Recently Patented Inventions

New Books, Etc.

Notes and Queries

Index of Inventions

Patents

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